Functionalization of pyridine via direct metallation
作者:Jacob Verbeek、Albert V. E. George、Robertus L. P. de Jong、Lambert Brandsma
DOI:10.1039/c39840000257
日期:——
The isolation of mixtures of 2-, 3-, and 4-deuteriopyridine, 2-, 3-, and 4-trimethylsilylpyridine, or 2-, 3-, and 4-methylthiopyridine indicates successful metallation of pyridine with a 1 : 1 mixture of BuLi-ButOK in tetrahydrofuran–hexane at ––100 °C.
2-,3-和4-氘代吡啶,2-,3-和4-三甲基甲硅烷基吡啶或2-,3-和4-甲硫基吡啶的混合物的分离表明,吡啶与1:1的混合物成功地金属化在––100°C下于四氢呋喃–己烷中的BuLi-Bu t OK。
A visible-light-photocatalytic water-splitting strategy for sustainable hydrogenation/deuteration of aryl chlorides
作者:Xiang Ling、Yangsen Xu、Shaoping Wu、Mofan Liu、Peng Yang、Chuntian Qiu、Guoqiang Zhang、Hongwei Zhou、Chenliang Su
DOI:10.1007/s11426-019-9672-8
日期:2020.3
chlorides instead of using flammable H2. When applying heavy water-splitting systems, we could selectively install deuterium at the C−Cl position of aryl chlorides under mild conditions for the sustainable synthesis of high-valued added deuterated chemicals. Sub-micrometer Pd nanosheets (Pd NSs) decorated crystallined polymeric carbon nitrides (CPCN) is developed as the bifunctional photocatalyst,
Pd-catalyzed oxidative C–H/C–H cross-coupling of pyridines with heteroarenes
作者:Bo Liu、Yumin Huang、Jingbo Lan、Feijie Song、Jingsong You
DOI:10.1039/c3sc50348h
日期:——
We have developed for the first time a general, concise and highly selective method for the C2-heteroarylation of pyridines and related azines with a broad range of heteroarenes via a two-fold C–H activation, which streamlines the previous approaches that require the activated azine N-oxide as the coupling partner.
Tandem C-C Bond Cleavage of Cyclopropanols and Oxidative Aromatization by Manganese(IV) Oxide in a Direct C-H to C-C Functionalization of Heteroaromatics
作者:Desta Doro Bume、Cody Ross Pitts、Thomas Lectka
DOI:10.1002/ejoc.201501405
日期:2016.1
report a directC–H to C–Cbondfunctionalization of electron-deficient heteroaromatics enabled by mild C–Cbondcleavage of cyclopropanols as a new route to β-aryl carbonyl-containing products. Additionally, as an alternative to using a “catalyst” that requires an excess amount of a sacrificial oxidant for regeneration and/or oxidativearomatization, this paper features manganese(IV) oxide as an inexpensive
New Scandium Borylimido Chemistry: Synthesis, Bonding, and Reactivity
作者:Benjamin A. Clough、Simona Mellino、Eric Clot、Philip Mountford
DOI:10.1021/jacs.7b05405
日期:2017.8.16
with somewhat reduced ionicity. Despite this, reactions of these types of borylimides with C-H or C≡C bonds are all more exothermic and more strongly activating than for the corresponding arylimides. DFT calculations on model systems of differing stericbulk unpicked the underlying thermodynamic factors controlling the reactions of 25 and its reaction partners, and a detailed comparison was made with